`handleNonExpr` is responsible for handling assertions that do not
result in a decomposable expression, e.g. `REQUIRE_THROWS`, or
`REQUIRE_NOTHROW`.
Running benchmark on these two macros specifically, with
`REQUIRE_THROWS([](){ throw 1; }())`, and `REQUIRE_NOTHROW([](){}())`,
we get these speedups:
| | Debug | Release |
|---------|--------|---------|
| THROWS | 3.69x | 2.10x |
| NOTHROW | 1.18x | 1.05x |
Obviously the actual performance improvement is dependent on
how expensive the expression under test is.
Martin Hořeňovský
715558fd97